From baca881addda82035e9471e127abe34367de1975 Mon Sep 17 00:00:00 2001
From: Evstrat_BG <evstrat.bg@mail.ru>
Date: Tue, 12 Mar 2019 01:47:42 +0300
Subject: [PATCH] fix fields

db_string doesn't use \\N, only null
---
 src/infi/clickhouse_orm/fields.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/infi/clickhouse_orm/fields.py b/src/infi/clickhouse_orm/fields.py
index b2cddfb..4dfb6be 100644
--- a/src/infi/clickhouse_orm/fields.py
+++ b/src/infi/clickhouse_orm/fields.py
@@ -474,7 +474,7 @@ class NullableField(Field):
 
     def to_db_string(self, value, quote=True):
         if value in self._null_values:
-            return '\\N'
+            return 'null'
         return self.inner_field.to_db_string(value, quote=quote)
 
     def get_sql(self, with_default_expression=True):